Editing Hucbald (section)

===Music theory===
[[File:Muziekkast en piano met een reliek van Sint-Cecilia Piano, BK-1996-9.jpg|thumb|A 19th century piano depicting Hucbald (far left) among other Christian and musical figures.]]
The only theoretical work which can positively be ascribed to Hucbald is his ''Musica'' (formerly known as ''De harmonica institutione''), probably written about 880.{{sfn|Palisca|1978|p=5}}{{sfn|Chartier|2001|loc="3. The theorist"}} The work shows considerable influence from the writings of [[Boethius]], and by extension [[Ptolemy]].{{sfn|Palisca|1978|p=5}}

The ''[[Musica enchiriadis]]'', published with other writings of minor importance in [[Martin Gerbert|Gerbert]]'s ''Scriptores de Musica'', and containing a complete system of musical science as well as instructions regarding notation, has now been proved to have originated elsewhere about the same time and to have been the work of unknown writers belonging to the same intellectual ''milieu''. This work is celebrated chiefly for an essay on a new form of notation described today as [[Daseian notation]]{{sfn|Chisholm|1911}} and its readable transmission of the first record of Western [[polyphony|polyphonic music]].{{citation needed|date=September 2021}}